//TestPoint--> Point(double x,double y) double getDis()
public class TestCircle {

	public static void main(String[] args) {
		Circle c = new Circle();
		c.r = 12.3;
		System.out.println(c.calArea());
		System.out.println(c.calPerimeter());
	}

}

class Circle {
	static final double PI = 3.14;
	double r;
	
	public double calArea() {
		return PI*r*r;
	}
	
	public double calPerimeter() {
		return 2*PI*r;
	}
}
